Q: What are the prime factors of the number 31,640,704?

 A: 2, 247193

Why are those the prime factors of the number 31,640,704?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 31,640,704

31,640,704
Factor Arrows
215,820,352
Factor Arrows
27,910,176
Factor Arrows
23,955,088
Factor Arrows
21,977,544
Factor Arrows
2988,772
Factor Arrows
2494,386
Factor Arrows
2247,193

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 247193

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 247,193 = 31,640,704

This can also be written as 27 x 247,1931 = 31,640,704

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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